Stone and ore breaker



(Remodel.) 2 singensneet1.A

S. L.. MARSDEN.

. STONE AND ORE BREAKBR.

No. 361,173. Patented Apr. 12, 1887.

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l STONE AND ORE BREAKBR. No. 361,173. Patented Apr. 12, 1887.

www Nwmywy l 7 NITED STATES PATENT Orricno SAMUEL LOVE MARSEN, OF NEV HAVEN, CONNECTICUT.

STONE AND ORE BREAKER.

SPECIFICATION forming pari: of Letters Patent No. 361,173, dated April 12, 1887,

Application tiled May 4, 1886. Serial No. 201,033.

To all whom it may concern,.-

Be it known that I, SAMUEL Lowa MARS- DEN, a citizen of the United States of North America, and a resident of New Haven, county of New Haven, State of Connecticut, have invented a new and useful Improvement in Stone and Ore Breakers, of which the following is a specilication.

This invention relates to an improvement in that class of stone and ore breakers called jaw- Crushers;77 and its objects are to increase the effectiveness of the breaker for certain work, to relieve the strain upon certain of the working parts, and to make the machine more dura- The invention consists in the peculiar combinations and the novel construction and arrangement of parts, all as more fully hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts throughoutall the figures.

Figure l is a plan of my improved stone breaker or Crusher. Fig. 2 is a sectional side elevation thereof. ,i Fig. 3 is an enlarged rear View of the top of the movable jaw.

In the drawings, A represents the frame of the machine, B B the iiy-wheels, C the driving-pulley, -D the crank-shaft, E the pitman, F the toggle-block, F the toggle, G the ixed jaw, G the fixed-jaw plate, H the cheeks, and l the tension-rod, all of which are parts well known and understood, and hence require no further description herein.

1 pivot the movable jaw at a point between the upper and lower end, on apivot, L,which passes transversely through it, and has end bearings in boxes a, which have room to slide longitudinally forward and backward in openings b,which are madein ,the opposite sides of the frame A, and are covered by caps cto keep the dust out. This makes of said jaw a lever with sliding fulcrum. Transversely through the' upper end of this movable jaw K avertical slot, d, is made, and through this is passed the pitman wrist-pinf, by Ineans of which motion is transferred from the pitman, This wristpinf may be set in the upper or lower part of the slot d, or intermediate between the two points, andthe jaw K be firmly secured in (No model.)

place thereon by tightly turning up the nuts ff, and, if necessary, set-screws, screw-bolts, wedges, or other devices may be used to keep the jaw and wrist-pin in their desired relative positions. A recess, g, formed in the upper part of the jaw K, a'ords room for the free motion of the pitman held therein.

As shown in the drawings, the wrist-pin f is engaged in the extreme upper part of the slot d, and the pivot or fulcrum Lis somewhat below the longitudinal center of the jaw and above the horizontal line of the toggleF, in such relative position to said toggle that on the extreme downward and backward throw of the pitman, and the consequent forward motion of the lower end of the said jaw K, the

toggle F will be brought graduallyinto a horif zontal position by the motion ofthe jaw, with the effect of forcing the lower portion of the jaw forward,and to operate with straight rigid thrust to support or back up the action of the lowerpart ot' said jaw at the moment when its crushing force should be most absolute. It will be evident, the throw of the top oi' the jaw being the same, that the movement ofthat part below the pivot or fulcruni would be increased by placing the pivot higher in the j aw, and would be decreased by placing it lower; hence the location of said pivot by determining the range of the oscillation ot' the lower part of the said jaw, determining the closeness Iof its approach to the fixed jaw, will gage the neness of the crushed material delivered by the machine.

The movable j aw being fulcrumed, as shown, every point on it and the jaw-plate K' describes an arc of a circle when the jaw is in motion,so that a rubbing effect is constantly produced upon the stone or other material between the j aws,whereby it is more finely broken or pulverized than it would be simply by the thrust of the toggle. It will be seen, also, that if the wristpin f is fixed in the lower part of the slot d the swing ofthejaw will,when the machine is at work,be through a greater arc than when the said wrist-pin is in the upper part of said slot, as shown, and more power will be required to produce like crushing effect; hence it is obvious that by the adjustment of the said pin in the said slot the distance between the jaws at the top may be regulated for receiving larger IOO orsnialler pieces ofstone to be crnshed,and the distance at the bottom be adjusted for finer or coarser erushing,and the expenditure of power for certain efects be increased or reduced.

There is but little working strain on the fnlerum or pivot L, as it simply turns in its bearings with the oscillation ofthejaw K,the crushing strain being taken by the toggle F.

k are ears cast on the frame, and on which rests the lower end of the jaw-plate G.

M are caps formed either separate or as integral parts of the frame, and which serve to hold the said jaw-plate down.

The toggleblock Fis supported in a shoe, F2, and is vertically adjustable, as usual,by means of an attached screw bolt and nut, Z,- but iu order to positively secure it from accidental upward movement I introduce a stop-block, Z', between its top and the frame of the machine, as shown in Fig. 2.

p is a spring, p a nut, and q a conical cap on the rod I, and r r are bosses on either side above and below the rod aperture in the erusherframe,so that when the forward motion of the swingingjaw draws the rod forward the inclined planes of the cap q come in contact with the bosses r near their apices, and the pressure upon the spring p is consequently at and from the beginning gradual, and at the same time the said bosses keep the cap from being drawn into and caught in the rod-aperture.

Vherever in the appended claims I refer to the movable jaw as being centrally pivoted I wish to be understood as meaning pivoted between its upper and lower ends and substantially in the longitudinal center of its working or crushing part.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The eombi11ation,with the centrally-pivoted movable jaw, of a pitman attached to the upper part thereof, and a tension-rod attached to the lower part of said jaw, lsubstantially as described.

2. The combination, with the movable jaw ceutrallypivoted onahorizontal sliding pivot, of said pivot, a tension-rod attached to the lower part of said jaw, and a vertically-adjustable pitman connected with the upper end of said jaw, substantially as and for the purpose specied.

3. The combination, with the movable jaw centrally pivoted on a sliding pivot and formed near its upper end with vertical slot d and recess g, of said pivot, the pitmau, and the pitman wrist-pin passed through said slot and provided with nuts, substantially as and for the purpose specified.

4. The combination of the eentrally-pivoted movable jaw, a pitlnan attached to the upper part thereof, a tensioirrod attached to the lower part of said jaw, and a toggle connected with said jaw between said pitman and tensionrod, substantially as described.

In testimony that I claim the foregoing as my invention Ihave signed my name, in presence of two witnesses, this 6th day of February, 1886.

S AHL. LO WE M ARSDEN.

fitnessesz J Aeon J. S'ronnn, PHILiP D. XVHLLPLEY. 

